Year	Percent
1950	12.85816
1955	14.68483
1960	14.92517
1965	15.683
1970	14.85773
1975	14.62382
1980	11.4792
1985	11.61907
1990	8.7445
1995	8.76399
2000	8.68594
2005	8.44932
2010	8.25715
2015	6.98878
2020	6.46576
2025	5.78229
2030	5.85097
2035	6.18101
2040	6.21713
2045	5.92277
2050	5.55748
2055	5.30697
2060	5.25963
2065	5.35967
2070	5.39416
2075	5.26211
2080	5.02502
2085	4.83601
2090	4.77847
2095	4.83094
2100	4.90585