Year	Percent
1950	10.10636
1955	7.40299
1960	8.60024
1965	9.82846
1970	8.95641
1975	6.72753
1980	8.87159
1985	8.62314
1990	8.59252
1995	7.65369
2000	7.85505
2005	5.75173
2010	5.42554
2015	5.25466
2020	5.38506
2025	5.07645
2030	4.97724
2035	4.88218
2040	4.7934
2045	4.7856
2050	4.85475
2055	4.88746
2060	4.87316
2065	4.86112
2070	4.85881
2075	4.87973
2080	4.91449
2085	4.94055
2090	4.93161
2095	4.90181
2100	4.8684