Year	Percent
1950	27.5202
1955	27.32177
1960	27.73954
1965	25.89782
1970	21.37677
1975	20.59623
1980	21.61195
1985	27.31438
1990	28.40069
1995	28.28703
2000	27.70611
2005	28.14785
2010	30.23071
2015	33.18395
2020	34.9946
2025	34.95605
2030	33.55662
2035	31.57691
2040	30.09561
2045	29.02353
2050	27.9889
2055	26.92088
2060	25.65461
2065	24.45281
2070	23.50022
2075	22.81536
2080	22.31809
2085	21.91775
2090	21.55739
2095	21.24064
2100	20.99404