Year	Percent
1950	5.52703
1955	5.43503
1960	5.33669
1965	6.06374
1970	7.03467
1975	7.64452
1980	7.41854
1985	6.82925
1990	8.56797
1995	9.02961
2000	9.66098
2005	9.44236
2010	9.52202
2015	10.936
2020	13.21903
2025	16.26972
2030	18.34246
2035	20.16058
2040	21.97979
2045	23.91471
2050	25.72162
2055	27.67624
2060	29.59661
2065	31.15451
2070	32.8902
2075	34.35383
2080	35.65118
2085	36.68374
2090	37.49689
2095	38.17309
2100	38.79977