Year	Percent
1950	11.27594
1955	12.952
1960	11.94409
1965	10.27782
1970	6.4193
1975	10.71
1980	9.25279
1985	11.88163
1990	10.93274
1995	7.25577
2000	7.81246
2005	7.64924
2010	7.86607
2015	7.39127
2020	6.96682
2025	6.25649
2030	6.04589
2035	6.06847
2040	6.04757
2045	5.88361
2050	5.60542
2055	5.35657
2060	5.26213
2065	5.30821
2070	5.35175
2075	5.30194
2080	5.17512
2085	5.05847
2090	5.00707
2095	5.02629
2100	5.05764