Year	Percent
1950	10.0216
1955	9.20977
1960	7.5798
1965	7.03063
1970	6.97226
1975	8.40598
1980	8.65388
1985	6.70537
1990	6.26078
1995	5.73106
2000	4.34798
2005	4.5634
2010	5.39917
2015	5.20909
2020	5.04912
2025	4.77029
2030	4.45598
2035	4.35494
2040	4.60772
2045	4.88778
2050	4.94967
2055	4.86074
2060	4.7365
2065	4.68495
2070	4.77822
2075	4.96257
2080	5.08643
2085	5.07463
2090	4.96784
2095	4.85493
2100	4.81062