Year	Percent
1950	11.77618
1955	11.50104
1960	10.83765
1965	12.58365
1970	12.2129
1975	11.84703
1980	11.8485
1985	12.03112
1990	12.4836
1995	12.28954
2000	12.37603
2005	12.73393
2010	13.1533
2015	12.45103
2020	10.89983
2025	9.19197
2030	8.75787
2035	8.32575
2040	7.71897
2045	6.98121
2050	6.36285
2055	5.97167
2060	5.68856
2065	5.439
2070	5.19283
2075	4.97522
2080	4.81423
2085	4.71496
2090	4.66916
2095	4.64315
2100	4.61681